Method of welding plastic seams

Details Method of welding plastic seams Method of welding plastic seams

1976-04-30

1977-09-27

Hoag, Willard E.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

To produce composite, plural part or multilayered article

156304, 156306, 264293, 264296, 264322, B29C 1700, B29D 900, B29F 500

Patent

active

040512185

ABSTRACT:
A method of welding together two thermoplastic surfaces to form a strong watertight bond therebetween comprising the steps of serrating the two surfaces while simultaneously melting the serrations formed therein and pressing the two surfaces together, ridge to ridge and valley to valley, to collapse the ridges and cause the molten thermoplastic material to flow into the valleys until a single continuous watertight seam is formed therebetween.

REFERENCES:
patent: 2505647 (1950-04-01), Norris
patent: 2631509 (1953-03-01), Whytlaw
patent: 2749261 (1956-06-01), Hardison
patent: 3013925 (1961-12-01), Larsen
patent: 3219742 (1965-11-01), Reinert
patent: 3395204 (1968-07-01), Olsson et al.
patent: 3902943 (1975-09-01), Debliek

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